20736040905

素因数分解:

$3^4\times 5^1\times {\mathrm{51200101}}^1$

素因数の和:51200118

約数の個数: 20

約数和(自身を含む): 37171274052

約数和(自身を除く): 16435233147

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 51200101, 153600303, 256000505, 460800909, 768001515, 1382402727, 2304004545, 4147208181, 6912013635, 20736040905]

約数ペア:

[(1, 20736040905), (3, 6912013635), (5, 4147208181), (9, 2304004545), (15, 1382402727), (27, 768001515), (45, 460800909), (81, 256000505), (135, 153600303), (405, 51200101)]